.count {
    margin: 100px auto;
    width: 300px;
    height: 300px;
    border: 1px solid black;
}



button {
    width: 30px;
    height: 30px;
    font-size: 18px;
    line-height: 30px;
    text-align: center;
    vertical-align: top;
    background-color: white;
    border-radius: 10px;
}

button:hover {
    background-color: lightgrey;
}